<!--docytpe html-->
<html><head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<meta charset="UTF-8">
<script>
window.onload=function(){
var c=document.getElementById("myCanvas").getContext("2d");
var in1=document.getElementById("in1");
var in2=document.getElementById("in2");
in1.onfocus=function(){
c.beginPath();
c.rect(10, 10, 200, 200);
c.drawFocusIfNeeded(in1);
c.beginPath();
c.rect(10, 220, 200, 200);
c.drawFocusIfNeeded(in2);
}
in1.focus();
}
</script>
</head>
<body>
<canvas id="myCanvas" height="500" width="500" style="border:1px solid black">
   <input id="in1" type="range" min="1" max="12">
   <input id="in2" type="range" min="1" max="12">
</canvas>

</body></html>
